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Old 20th Sep 2004, 18:11
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jettison valve
 
Join Date: Sep 2002
Location: Europe
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747FOCAL,

I am no W&B pro, not at all. But here is what I am thinking of:

Positive:
- It may avoid typos (so far, the driver has to enter f. e. ZFW and ZFWG to initialize the FMS), which can result in faults ("excess aft cg" warning) and subsequent manual fuel xfers during flight.
- It *may* serve as a cross check for the traditional way of W&B. Apparently, AI tested a system on A320s which was found to be very accurate. On the other hand, some B747F operators deactivated such a system due to the poor reliability.

Negative:
- Poor reliability (see above),
- Doesn´t take running loads (f. e. lbs/in) into account; therefore, the load sheet has to be done anyway!

Waiting to see the experts´ answers,
J.V.
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